AutoCodes – Toyota – P0118 2016 Toyota RAV4

P0118 2016 Toyota RAV4 Code - Engine Coolant Temperature Circuit High Input

Quick Answer

The engine coolant temperature sensor is used to monitor the engine coolant temperature. Common causes include Low engine coolant level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0118 2016 Toyota RAV4 indicates Engine Coolant Temperature Circuit High Input.
Common causes: Common causes include Low engine coolant level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 412

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 23, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0118 2016 Toyota RAV4 Description

The engine coolant temperature sensor is used to monitor the engine coolant temperature. The engine coolant temperature sensor has a thermistor with a resistance that varies according to the temperature of the engine coolant. When the coolant temperature is low, the resistance in the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are reflected in the output voltage from the sensor. The Engine Control Module (ECM) monitors the sensor voltage and uses this value to calculate the engine coolant temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a fault in the engine coolant temperature sensor circuit and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0118 2016 Toyota RAV4 - Engine Coolant Temperature Circuit High Input - AutoCodes.com — P0118 2016 Toyota RAV4 Code - Engine Coolant Temperature Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0118 2016 Toyota RAV4?

Low engine coolant level
Faulty Engine Coolant Thermostat
Faulty Engine Coolant Temperature (ECT) sensor
Engine Coolant Temperature sensor harness is open or shorted
Engine Coolant Temperature sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0118 2016 Toyota RAV4?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Start by checking the engine coolant level at the coolant reservoir, a low level may indicate a coolant leak. If the coolant level is correct, you should replace the Engine Coolant Temperature (ECT) sensor to fix the problem. The Engine Coolant Thermostat must be replaced every time there is a repair with the coolant system.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0118 2016 Toyota RAV4 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0118 2016 Toyota RAV4 Code

What does OBDII code P0118 mean for a 2016 Toyota RAV4?

P0118 indicates a high voltage input from the Engine Coolant Temperature (ECT) sensor, suggesting a problem with the sensor or its circuit.

What are the common symptoms of P0118 in a 2016 Toyota RAV4?

Symptoms may include poor engine performance, rough idling, hard starting, increased fuel consumption, and the check engine light turning on.

What causes the P0118 code in a 2016 Toyota RAV4?

Potential causes include a faulty ECT sensor, damaged wiring or connectors, a short circuit, or issues with the engine control module (ECM).

How can I diagnose the P0118 code in my Toyota RAV4?

Use an OBDII scanner to confirm the code, inspect the ECT sensor and wiring for damage, and check the sensor's voltage and resistance with a multimeter.

Can I drive my 2016 Toyota RAV4 with the P0118 code active?

While it may be possible to drive, itâ€™s not recommended as the engine may overheat or experience poor performance, potentially causing further damage.

How do I fix the P0118 code on a 2016 Toyota RAV4?

Repairs typically involve replacing the ECT sensor, repairing or replacing damaged wiring or connectors, or addressing ECM issues if necessary.

How much does it cost to repair the P0118 code on a Toyota RAV4?

Repair costs vary, but replacing the ECT sensor typically costs $100-$250, including parts and labor. Wiring or ECM repairs may cost more.

Will clearing the P0118 code fix the issue?

No, clearing the code will only temporarily turn off the check engine light. The underlying issue must be resolved to prevent the code from returning.

Can a bad ECT sensor cause overheating in a 2016 Toyota RAV4?

Yes, a malfunctioning ECT sensor can cause inaccurate temperature readings, potentially leading to engine overheating or improper cooling system operation.

How can I prevent the P0118 code from occurring in the future?

Regular maintenance, inspecting wiring and connectors for damage, and using high-quality replacement parts can help prevent this issue.